It is possible that the main title of the report Marfan Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
As Jenny points out, being able to lisp the alphabet song at age two has little to do with 'knowing' the alphabet. And, yes, most children learn the letters by sight and sound in kindergarten, although most are capable of learning this information sooner if diligently taught by parents or others.
Language Development: On average, a 4 year old knows about 4,000 to 6,000 words, but donât start counting! If your childâs vocabulary is increasing â and she shows an interest in learning and using new words â sheâs on track!